Machine for casting printing-plates of type metal.



P. A. TOOMEYf MACHINE FOR CASTING PRINTING PLATES OF TYPE METAL.

APPLICATION FILED MAR. 3,1914

Patented Sept. 5, 1916.

2 SHIEETS-SHEVET 1 P. A. TOOMEY. I MACHINE FOR CASTING PRINTING PLATES OF TYPE METAL. I

APPLICATION FILED MAR. 3, I914. 1,1 96,824. I v PatentedSept. 5,'-1916.

2 SHETS-SHEET 2.

PATRICK A. TOOMEY, OF CHICAGO, ILLINOIS.

MACHINE FOR CASTING PRINTING-PLATES OF TYPE METAL.

, Specification of Ltteis lPatent. Patented S t 5 1916 Application filed'MarchB, 1914. Serial N 0. 822,241.

To all whom it may concern:

Be it known that I, PATRICK A. TOOMEY, a citizen of the United States, and a resident ofChicago, in the county of Cookand State of Illinois, have invented certain new and useful Improvements in Machines for Casting Printing-Plates of TypeMetal; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to theaccompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to that class of machines for casting printing plates of type metal, having stationary and relatively movable mold members adapted to form a mold chamber therebetween and provided with means for removably securing a matrix or mat in operative position within the mold chamber, and for dividing the mold chamber into compartments of. the desired widths or dimensions corresponding with the varying widths or dimensions of the printing plates to be cast. t

The principal object of the invention is to provide a simple, economical and efficient machine for casting printing plate of type metal. V

A further object of the invention is to provide a mold or device for casting printing plates, such mold comprising adjustable mold members and being so constructed as to enable matrices or mats having thereon the impressions or outlines of type characters, j

figures, cuts or other designs to be removably secured and held within the mold and in position to enable type plates or printing plates of various widths to be cast in the same apparatus, in such a manner that the plates will each be complete as cast, and will come out of the mold each of the exact width required without the necessity of trimming.

Other and further objects of the-invention will appear from the following description and claims and from an inspection of the aci companying drawings which are made a part hereof.

The invention consists in the features,

combinations, and details of construction herein described and claimed.

In the accompanying drawings, Figure 1 member upon the bed or bottom frame.

l is a perspective view of a casting machine constructed in accordance with my invention, the two-partmoldor casting box there- .of being shown in fully opened'position; Fig. 2, a horizontal sectional view, taken on line 2 of Fig. 1 looking in the direction of the arrow; Fig. 8, an enlarged detail view.

showing the means for adjustably securing the inner clamping wall-forming bar mem bers to the movable mold or casing member; Fig. 4, a view showing a plurality or set of I supplementary or interchangeable clamping bars, the same being shown in cross-section on the same section line on which the clamping bars are shown in Fig. 3; Fig. 5, a view in elevation of a plurality or set of end or transverse slugs of various lengths corresponding with the widths of the printing plates to be cast ;'Fig. 6, a View in side elevation of a plurality of slugs of various lengths, the purpose of which will be hereinafter referred to; and Fig. 7 is a fragmentary top plan view of the movable mold member and showing the manner of use of spacing members to be mentioned hereinafter in detail.

In constructing a casting machine or mold in accordance with my invention, I provide a mold a comprising a stationary mold memher 7), which is, by preference, arranged in upright posit on upona horizontal frame or fixed bed 0, to which it is secured by means of bolts cl or other suitable securing means. The upright mold member is rigidly held in position by means of upright braces or standards 6, at the lower ends of which are provided lateral projections 7 through which securing bolts cl extend in position to rigidly hold the upright braces and upright mold main movable mold member 9 is mounted in movable relation to the stationary or upright inold'member 7), being by preference pivotally connected with the latterby means of hinge members hon the'movable mold member, mating hinge members 2' on the stationary mold member, and pintles or horizontal pivots j mounted in said hinge members. The movable or hinged mold member is thus adapted to swing from lowered or open position, in which it is shown in full lines in Fig. 1, to closed or upright position, and in operative engagement with the stationary upright mold member, in which latter position it is shown in full lines in Fig. 2. The hinged or movable mold member g comprises a fiat bottom wall or bed 76 having in-, tegral marginal side walls Z, m and an integral end wall n which extends between said side walls Z, on along the hinged edge of said movable mold member, as clearly shown in Fig. 1.. Said marginal walls Z, 'In, and a project the same distance beyond the flat bottom wall k, and said marginal walls bear throughout their length against the opposed surfaces 0, p of the stationary member (a, when the mold box is closed and said mold members are in contact with each other. (See Fig. Said bottom wall or bed 76 is suitably reinforced and braced by longitudinal and transverse ribs or webs made integral with the rear or exterior face of the movable mold member 9, as shown in Figs. 2, S, and 4-.

Inner or intermediate longitudinal partition walls or rails g, 1' and s are arranged parallel to each other and in parallel relation to the side marginal members Z and m on the inside of the movable mold member 9. These partition walls each abut against the marginal end rail or end wall a of the movable mold member and extend at right angles therefrom, by preference throughout the entire length of the mold member 9 so as to divide the space between the side marginal members Z and 'm into separate mold chambers. These compartments or spaces are each adapted to enable a type plate or printing plate of type metal of the desired width to be cast in the spaces or mold chambers located between said longitudinal parts, when clamping bars or adjustable inner mold members 6 are in their operative position so as to form the side walls of the mold chambers or spaces a, o, o and '10 between said inner adjustable mold members. These adjustable inner clamping and wall-forming members 25 are adapted to securely hold matrices or mats y with their backs in position against the inner face of the mold wall 70 and with the impressions of the type characters or outlines to be reproduced on the other or inner faces of the matrices or mats. The matrices and the plates to be cast are in practice often required to be of either greater or less width than a standard column. It is very desirable that in each instance the width of the printing plate when finished should be exactly that required as measured in picas or points, without the necessity of trimming,

and that the clamping members be adapted to securely hold the matrices or mats of such various widths in operative clamping position and in position to form the side walls of the printing plate to be cast between such clamping and chamber wall-formlng memcompartments or hers t, and that they be adapted to permit the insertion and removal with facility of the matrices or mats and of the plates when cast. In order to enable this to be accomplished in'a-n efficient manner, the clamping members t are each secured at one end, by preference in pivotal relation to the movable or hinged mold member 9, by means of bolts or screws 2 which are mounted in the fixed or longitudinal. wall members Z, m, g, r and s, respectively, and extend through suitable apertures in the ends of the adjacent clamping members If so as to enable the latter to be raised with respect to the wall 717 of the main movable mold member 9, to permit the insertion or removal of the matrices or mats, and lowered into clamping engagement with the marginal portions 2 of the matrices. Each of the bolts 2 is, by preference, provided with screw threads 3 which are adapted to engage similarly threaded nuts 4 mounted upon the threaded ends of said belts or screws, and the threaded portions 3 of the bolts, when desired, may also be in threaded engagement with similarly threaded apertures in the clamping members t.

The pivot bolts 2, 2 extending through and beyond the clamping bars, enables the latter, when the clamp nuts 4, 4 are loosened, to be moved or adjusted bodily transversely of the mold chambers, or longitudinally of the bolts, for the purpose of decreasing the width of the mold spaces formed between the clamping bars. In other words, the clamping bars 25, 2? may be adjusted laterally or transversely of the mold chambers in which they are located for the following purpose: To clamp the rear margin 7 of the mat or matrix against the bed 70, I employ a slug (3, as shown in Figs. 3 and 4. Said slug 6 is made wide enough to extend completely between the said clamping bars 2?, t and forms the end wall of the mold chamber in which it is located. As shown, said slug 6 has a rearwardly projecting part which bears against the inner face of the end wall a of the mold member 9. The top face of said slug 6 is in the same plane with the corresponding faces of the side and partition walls and clamping bars of the movable mold member. Said slug bears against the surface 0 of the stationary mold member 5, when the casting box is closed. As shown in Fig. 4, the slug 6 covers, in effect, the ends of the pivot bolts 2, 2 and applied nuts 4, 4 located in said mold chamber to, and serves to prevent the molten stereotype metal, poured into the said mold -chamber, from coming into contact with and solidifying about such parts. The said clamping bars t,- t and the slug 6 form the side and end walls of the mold chamber w, and the impressions on the matrix located in said mold chamber, are all within the space defined by such parts. After the matrix is clamped in the mold chamber iv,

a width less than a standard column, one of the clamping bars't in one of the mold chambers v, '0, o is adjusted transversely of a the selected mold chamber. As shown in Fig. 2, the right-hand clamping bar 25 in the mold chamber '0, formed in part by the side wall m, is illustrated in a position it would occupy after being adjusted to cast a printing plate of a width less than a standard 7 column. To adjust said right-handclamping bar t into the position referred to, the bolt 2, shown in Fig. 1 and by which said clamping bar is pivotally connected with the side m under normal conditions, is removed and replaced by a longer bolt 2, shown in Fig. 7. Said bolt 2 has threaded connection at one end with the side wall m and is made long enough to extend across the inner or rear end of the right-hand mold chamber '0 a distance sufiicient to enable said right-hand clamping bar to be adjusted into the position referred to. A nut 4 is applied on the'free end of said bolt 2 and tightened against said right-hand clamping bar t. An end slug 6 of the proper length is inserted at the inner end of the mold chamber 11 between the adjusted right-hand clamping bar If and its associated clamping bar pivotally secured to said partition walls 8. The rearward part of said end slug 6 extends over and above the opposed endsof said bolts 2, 2 and nuts 4 applied thereon. Such rear part of said end slug 6 bears against the inner face of the end wall 12, the same as the end slug 6 shown in Fig. 4. In order to hold the adjusted clamping bar t the proper distance from the side wall m, I employ spacing members 5, 5, the latter being inserted between such parts. One spacing member 5 is preferably located adjacent the bolt 2, and said adjusted clamping bar If is held thereagainst by the nut 4 applied on said bolt 2. Any number of spacing members 5, 5 may be used to accomplish the result for which they are designed. Said spacing members 5, 5 extend between the adjusted clamping bar t and the side wall m, as shown in Figs. 2 and 7, and serve to space said clamping bar laterally from said side wall m, so that said bar will bear downward through all portions of its length upon the adjacent margin 2 of the matrix 3 located in said mold chamber 0. As shown in Fig. 7 two of such spacing members 5, 5 are employed, and the latter hold said adjusted clamping bar in its adjusted position and prevent the same from being moved laterally or displaced when molten type metal is poured into the mold space formed between said clamping bars. If the righthand' clamping bar t is adjusted laterally" from the side wall m a distance less than that shown in Figs. 2 and 7 spacing members 5, 5 of a length less than those shown in said figures would be used, in order to hold said adjusted clamping bars in their adjusted position. Under such conditions an end slug 6 of the required and proper length would be used in order to form the inner or end wall of the mold space between the clamping bars 25, t. It'is to be of course understood that the impressions of the type characters on the said matrix are all within the boundaries of the width of the type column to be -printed by the printing plate to be cast.

After the parts are placed in the said mold chamber 1) in the positions described, the mold box is closed,and the casting operations above described repeated. The core pieces 9, 9 that project into said mold chamber '22 are of such width transversely that the same extend into said mold chamber, even when the latter is made as narrow as it can be made. Of course, the core pieces may be removed when a printing plate is to be cast narrower than the minimum width of the core pieces. End slugs of various lengths are employed with my apparatus, so that there will be an end slug for each Width that the mold chambers may be set for. Such end slugs are indicated by 6, 6 in Fig. 6. Likewise, clamping bars of various transverse widths may be employed, and a set of such bars of various widths is indicated by t, t in Fig. 5, one set of such bars being employed for each end slug 6 employed. In other words, if a type-plate is to be cast having a width greater than standard column, but less than the distance between the partition walls q, 1', for instance, the clamping bars t, I? normally located in the mold chamber '0, formed between said partition walls, are removed, and clamping bars of a much less width, suchas the ones indicated by t, t in Fig. 1, are placed in said mold chamber. The clamping bars are interchangeable, and one set may be used in either mold chamber.

The corresponding inner or upper faces of the stationary members (1,?" and 8, respectively, and of the inner adjustable clamping member I? are adapted to snugly engage or abut against the faces 8 of the upright stationary mold member between cores 9 which are removably secured to the upright stationary mold member 6 by means of screws 10 or other suitable securing means. The cores 9 are, by preference, provided withspaces 11.therebetween which are adapted to permit type metal to flow into said spaces to form transverse edges or connecting bridge portions between the side marginal portions of the plates to be cast. The stationary mold member is provided with an outwardly inclined or flaring upper open end portion 12 adapted to provide a space or mouth 13 of sufiicient width and magnitude to readily admit the molten metal which is poured between the mold members b and or into the mold chamber. The mold is provided with suitable means for securing the main mold members 6 and 73 in closed position and adapted to permit them to be readily opened. This securing means may be in the form of clamps or catches 1 L hinged or pivotally connected to the stationary member by means of lugs or hinge members 15 and pivot pins or pintles 16 which extend through said lugs and through said clamping members or catches 14. These clamping members, when made in the form shown in the drawings, have angular end portions 16 which are adapted to extend over the marginal edges of the movable mold member Z1, when the latter is in closed position or in engagement with the stationary mold member b. Clamping screws 17 having clamping heads 19 at the inner ends thereof and provided with screw-threaded portions 18 in engagement with similarly screw-threaded apertures in the angular ends 16 of the clamping members 1a are adapted to be screwed into clamping engagement with the movable mold member 70 so as to securely hold the latter in engagement with the stationary mold member. These clamping members it are of course arranged at suitable intervals on opposite sides of the stationary mold members and in position to extend over and securely clamp the corresponding marginal portions of the movable mold member 7a in position and in engagement with the stationary main mold member.

The rear end portion 20 of the bed or bottom frame 0, when made as shown in the drawings, extends rearward from the stationary mold member Z) and is provided with a firebox or furnace 21 which may be of any desired, ordinary and well known form adapted to form a combustion chamber 22 having a flue 23 leading therefrom and provided with a door or opening for admitting fuel. The fire box is mounted upon a base 25 on the bed or bottom frame 0. A crucible or melting pot 26 is removably mounted in the fire box or heating chamber of the furnace 21 in which it is femovably supported by suitable handles or transverse supporting members 27 removably supported in notches or recesses'28 in .the upper edges or peripheral walls of the heating chamber or fire pot. The fire pot or furnace is located back of and sufiiciently close to the stationary mold member to enable the mold to be heated and kept at the desired temperature by the same fuel or heating means employed for heating the metal 29 contained in the crucible and which is to be melted and poured into the mold in casting the printing plates.

It is of course well known that in practice printed columns of newspapers are ordinarily thirteen picas or thirteen and one half picas in width. It is very desirable, as already suggested, to provide means whereby printing plates of various prede tel-mined widths, adapted to enable columns of greater or less width than standard to be printed therefrom, may be cast in such a manner as to entirely dispense with the necessity of trimming. The clamping bars t are therefore made of varying thicknesses and are interchangeable. For instance, in practice, I prefer to use clamping bars of thirty points thickness in connection with a matrix and mold chamber adapted to cast a type plate of thirteen picas in width. hen it is desired to cast a type plate of thirteen and one-half picas in width, clamping bars of twenty-seven points in width are employed on each side of the mold chamber or of the plate to be cast, or a clamping bar thirty points in width is removed from one side only of the matrix and the chamber containing the same and a clamping bar twenty-four points in width is inserted and used, each of exactly a predetermined number of whole points in thickness in each instance, printers measure, so that the bars are adapted in each instance to form side walls of a mold chamber of the exact width required to form a printing plate the width of which is exactly a predetermined number of whole points, printers measure, and so on using clamping bars of less and less -width, point by point, down to a pica or twelve points in width, to correspond with the increased relative width of the plates to be cast and the corresponding matrix to be used, which widths also increase point by point.

In the case of double columns, I find in practice that by employing clamping bars of thirty points in width in casting plates twenty-six and one-half picas in width and in connection with matrices or mats adapted to be used in casting such double column plates, very satisfactory results are accomplished. In casting plates of twenty-seven j picas in width, I employ in practice clamping bars of twenty-seven points in width on each side of the mold chamber and matrix or of the plate to be cast, or a clamping bar thirty points in width is removed from one side only of the matrix and of the plate to be cast and a clamping bar twenty-four points in width is inserted and used in place of the removed clamping bar, and so on, using bars of less and less width down to a pica or twelve points wide, the width of the clamping bars used being less point by; point corresponding to the increased widthof the plates point by point. In casting plates of less wi'dth: than that of a standard column, or of less than thirteen picas in width, I prefer to adjustthe clamping bar .or bars, Which may be thirty to interpose between the clamping bar thus adjusted and the adjacent longitudinal mold Y wall or partition, the required sized slugs, or office material of the required dimen sions, which dimensions vary point by point with the varying widths of the plates thus cast. Such of the slugs as would interfere with the casting of a printing plateor plates on account of the narrow dimensions of the plate are of course removed when necessary.

In addition to two clamping bars for each mold chamber, column, or matrix space, which bars may be of equal width, for instance thirty points, printers measure, I employ a set of supplementary clamping bars 2? of various widths or transverse thickness, which set may consist of or comprise a bar of twenty-seven points transverse thickness, a bar of twenty-four points thickness, a bar of eighteen points thickness, a bar of fifteen points thickness, and a bar.

of one pica or twelve points thickness, as indicated in Fig. 5, or two of each of said sizes may be provided if desired. I also employin addition to the end slugs of uniform length and which may comprise one transverse or end slug 6 of standard or thirteen picas in length for each matrix space, mold chamber or column upon the movable mold chamberadditional slugs 6 includ ing a slug which is twenty-four picas in length, a slug eighteen picas in length, and a slug twelve picas in length, said slugs being adapted to be used with the clamping bars which provide a space therebetweenof a width corresponding to the length of the slugs, respectively. (See Fig. 6.) I

lhe slugs are adapted to be mounted in any desired position across the space between any desired pair ofparallel clamping bars and any desired distance from the end mold wall, slugs or oflice material being interposed between said wall and slug, so that a mold chamber of any desiredlength less than that of the full length mold chambers between the clamping bars may thus be provided between any desired pair of clamping bars and near the upper extremity of the mold, convenient for casting when the mold is closed. Matrices of less length than the full length mold chambers may be laid with their ends 3 in abutting engagement between any desired pair of clamping bars (see Fig. 4) and the clamping bars are adapted to clamp the side marginsot the. '7

matrices" between said 'bars and the mold wall is and form adjustable mold walls which insure the production of complete cast printing plates of theexact width required and'type high, without trimming.

I clalm: v

.1. A device of the character described,

compris ng a casting box, embracing a pair of connected mold members adapted to be moved into and out of contact with each other in {opening and closing said casting box; there being a mold chamber formed between said mold members when the casting box is closed, one of said mold members being provided with laterally spaced partition walls adapted tocontact through their lengths with the other of said mold members when said casting box is closed, and

clamping members pivotally secured to said partition walls and adapted to engage and hold a matrix or mat in position between said fpartition walls.

2. A device. of. the "character described, comprising a castingjbox, embracing a pair of mold members adapted to be moved into and out of contact with each other in open-, ing and closing said casting box; there be.-

ing a mold chamber formed between said;

mold members when said casting box is closed, and a movable clamping member pivotally secured to one of said mold mem -v bers and adapted toengage and hold a matrix or mat in the moldchamber; said clamping member embracing at least two laterally spaced bars adapted to form the side walls oft'he ,moldchamber. v

3. In adevice of the class described, the

combination oi a pair of main mold members, having. inner surface portions movable into and out of abutting engagement with 'each other and provided with a space between said main mold members adapted to admit a matrix, a plurality of clamping bars mounted'between said main mold members in parallel relation to each other and adapted to form movable side walls of a mold chamber, each'of said clamping bars having one edge movable into abutting en,- gagement with an inner surface of one of said main mold members and having an opposite edge adapted to engage and clamp a marginal portion of a matrix between said clamping bar and the opposite main mold member, and a slug extending transversely across the space between said clamping bars and adapted to operatively engage an end margin of a matrix to be held in place between the last mentioned main mold mem her and said clamping members.

at. A device of the-character described,

ing and closing said casting box; there being amold chamber formed between said mold members when the casting box is closed, one of said mold members being provided with laterally spacedpartition walls adapted to contact with the other of said mold members when the casting box is closed, and a clamping bar pivotally and adjustably secured to.

each of said partition walls and adapted to engage and hold a' matrix or mat in the mold chamber.

5. In a device of the class described, the combination of a pair of main mold members having inner surface portions movable into and out of abutting engagement with each other and provided with a space between said main mold members adapted to admit a matrix, a plurality of clamping bars mounted between said main mold members in parallel relation to each other and adapted to form movable: side walls of a mold chamber, each of said clamping bars having one edge movable into abutting engagement with an inner surface of one of said main mold members and having an opposite edge adapted to engage and clamp a marginal portion of a matrix between said clamping bar and the opposite main mold member, means for adjustably securing said clamping members in parallel relation at varying predetermined distances from each other and in position to operatively engage the longitudinal margins of matrices of correspondingly varying widths, and a slug extending transversely across the space between said clamping bars and adapted to operatively engage an end margin of a matrix to be held in place between the last mentioned main mold member and said clamping members.

6. In a device of the class described, the combination of a pair of main mold members having inner surface portions movable into and out of abutting engagement with each other and provided with a space between said main mold members adapted to admit a matrix, a plurality of clamping bars mounted between said main mold members in parallel relation to each other and adapted to form movable side walls of a mold chamber, each of said clamping bars having one edge movable into abutting engagement with an inner surface of one of said main mold members and having an opposite edge adapted to engage and clamp a marginal portion of a matrix between said clamping bar and the opposite main mold member, means for adjustably securing said clamping members in parallel relation at varying predetermined distancesfrom each other and in position to operatively engage the longitudinal margins of matrices of correspondingly varying widths, and a se ries of interchangeable slugs of different lengths corresponding to the varying widths of the mold chamber formed be tween said clamping bars, and adapted to extend across the space between said bars in position to form an end wall of the mold chamber.

7; An apparatus of the character described, comprising a casting box, embrac mg a pair of mold members adapted to be moved into and out of contact with each other in opening and closing said casting box; there being a mold chamber formed between said mold members when said casting box is closed, one of said mold members bemg provided with a plurality of laterally spaced partition walls adapted to contact with the other of said mold members when the casting box is closed, clamping bars pivotally secured to said partition walls and adapted to engage and hold a matrix in said mold chamber, and a member extending between said clamping bars and forming the end wall of said mold chamber when said castingbox is closed.

8. In a device of the class described, the combination of a pair of main mold members having inner surface portions movable into and out ofabutting engagement with each other and provided with a space between said main mold members adapted to admit a matrix, a series of interchangeable clamping bars of unequal widths adapted to be arranged in pairs between said main mold members and in parallel relation to each other to form movable side walls of a mold chamber, each of said clamping bars having one'edge movable into abutting engagement with an inner surface of one of said main mold members and having an opposite edge adapted to engage and clamp a marginal portion of a'matrix between said clamping bar and the opposite main mold member, and

a series of interchangeable slugs of different lengths corresponding to the varying widths of the mold chamber formed between said clamping bars, and adapted to extend across the space between said bars in position to form an end wall of the mold chamber.

9. In a device of the class described, the combination of a pair of main mold members having inner surface portions movable into and out of abutting engagement with each other and provided with a space between said main mold members'adapted to admit a matrix, a plurality of clamping bars mounted between said main mold members in parallel relation to each other and adapted to form movable side walls of a mold chamber, each of said clamping bars having one edge movable into butting engagement with an inner surface of one of said main mold members and having an opposite edge adapted .to engage and clamp a marginal portion of a matrix between said clamping bar and the opposite main mold member, and a slug adj ustably mounted in position to extend across the space between said clamping bars and in transverse clamping engagement with a matrix to be held in place between said clamping members and said last mentioned main mold member.

10. In a device of the class described, th combination of a pair of main mold members having inner surface portions movable into and out of abutting engagement wlth each other and provided with a space between said main mold members adaptedto admit a matrix, aseries of interchangeable clamping bars of unequal widths adapted to be arranged in pairs between said main mold members and in parallel vrelation to each other to form movable sidewalls of a mold chamber, each of said clamping bars having one edge movable into abutting engagement with an inner surface of one of said main mold members and having an opposite edge adapted to engage andclampa marginal portion of a matrix between said clamping bar and the opposite main mold member, and a slug adjustably mounted in position to extend across the space between saidy clamping bars and in transverse clamping engagement with a matrix to be held in place between said clamping members and said last mentioned main mold member.

11. A device of the character described, comprising a casting box, embracing a palr of mold members hinged together and adapted to be moved into and out of contact with each other in opening and closing said cast ing box; there being a mold space formed between said mold members when the casting box is closed, a plurality of clamping bars pivotally secured to one of said mold members and adapted to engage and hold a matrix in said mold chamber, said clamping bars forming the side walls of said mold chamber, the other of said mold members being provided with core pieces adapted to extend into the space between said clamping bars when said casting box is closed, and fastening members for removably securing said core pieces to said last named mold member.

12. In a device of the class described, the' combination of a pair of connected 'main mold members having inner surface portions adapted to be moved into and outof abutting engagement with each other, and provided with a space between said main mold members, a matrix mounted in said space in contact with the inner surface of one of said main mold members, movable clamping members plvotally connected with the matrixsupportmg mold member and extending between said matrix and 5 the opposite main mold member, and adapted to form movable walls of a mold chamber, and a slug adjustably mounted in position, to extend across 7 the space between said pivoted clamping.

members and in transverse clamping engagement wlth sald matr x.

.113. In a device of the class described, the a combination of connected stationary and movable mold members having inner surface portions movable into and out of abutting engagement with each other and provided with a plurality of spaces between said connected mold members, a matrix mounted in each of said spaces between the connected mold members, a plurality of pairs of clamping bars all pivotally coimected with one of said connected main mold members and all arranged in parallel relation to each other between said main mold members, each pair of said clamping bars being in clamping engagement with the side margins of a matrix and adapted to form movable side walls of a mold chamber, and

a slug adjustably mounted between each pair of sald clamping bars and extending transversely across and in clamping engage ment with the corresponding matrixv and adapted to form an end wall ofa mold chamber.

14. A device of the character described, comprising a stand, a casting box mounted on said stand and embracing a stationary mold member and a movable mold member,

said stationary mold member being mounted in upright position on said stand, and said movable mold member having hinged connection with-said stationary mold member along one of the margins thereof, said movable mold member being provided with a plurality of partition walls, a clamping bar pivotally secured to each of said partition- "wa'lls and adapted toengage and hold a matrix or mat in the mold chamber formed presence of two witnesses, this 28th day of February, A. D. 1914. v

PATRICK A. TOOMEY. Witnesses;

MAURICE D. HERMAN, EUGENE C. WANN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I). C.

between said partition walls, and clamping 

